Two men were arrested in connection with the murders of the parents, grandmother and uncle of an infant found alive in Tennessee, as a manhunt for the suspected killer continues.

A third person has been arrested on suspicion of helping a fugitive accused of killing four relatives of a Tennessee baby who was found abandoned alive last week, authorities said Monday.

As the search continued on Monday for a 28-year-old man suspected in the homicides of four people in Tennessee, two additional individuals have been arrested on charges linked to the killings, authorities said.